Manual toothbrush



FIG. 1 is a perspective view of a manual toothbrush;

FIG. 2 is a front view thereof;

FIG. 3 is a right side view thereof;

FIG. 4 is a rear view thereof;

FIG. 5 is a left side view thereof;

FIG. 6 is a top plan view thereof; and,

FIG. 7 is a bottom plan view thereof.

The broken lines showing the bristles and handle illustrate portions of the manual toothbrush that from no part of the claimed design. 

CLAIM The ornamental design for a manual toothbrush, as shown and described. 